tests/run.sh: Don't fail because of grep

This script runs under "set -e", so any command exiting with a non-zero status
makes it abort. However, we do not care about failures from grep to find
anything, so handle that case gracefully.

Signed-off-by: Uli Schlachter <psychon@znc.in>

tests/run.sh

@@ -222,7 +222,7 @@ for f in $tests; do
     if ! grep -q -E '^Test finished successfully$' $awesome_log ||
             grep -q -E '[Ee]rror|assertion failed' $awesome_log; then
         echo "===> ERROR running $f! <==="
-        grep --color -o --binary-files=text -E '.*[Ee]rror.*|.*assertion failed.*' $awesome_log
+        grep --color -o --binary-files=text -E '.*[Ee]rror.*|.*assertion failed.*' $awesome_log || true
         errors=$(expr $errors + 1)
     fi
 done